CN102284777A - Method for strengthening surface overlaying of perforator top of seamless steel tube - Google Patents
Method for strengthening surface overlaying of perforator top of seamless steel tube Download PDFInfo
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- CN102284777A CN102284777A CN2010102017437A CN201010201743A CN102284777A CN 102284777 A CN102284777 A CN 102284777A CN 2010102017437 A CN2010102017437 A CN 2010102017437A CN 201010201743 A CN201010201743 A CN 201010201743A CN 102284777 A CN102284777 A CN 102284777A
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Abstract
The invention discloses a method for strengthening surface overlaying of a perforator top of a seamless steel tube. The top can be a casting or a forging piece and the method provided by the invention comprises the following steps of: firstly, primarily and firstly processing a top blank, cutting the heat part of the top to form an overlaying thickness and keeping a finishing stock of a body part; carrying out a conventional fault detection treatment and carrying out a rework treatment when the fault is existed; utilizing Ni-based, Co-based or metal ceramic alloy material to carry out the overlaying the head part of the top to form an overlaying layer; utilizing a plasma arc overlaying method to guarantee that the overlaying layer and a base of the head part of the top are completely fused; turning the top until the final size requirement is reached, then carrying out the fault detection treatment and carrying out the rework treatment when the fault is existed; and carrying out a surface thermal oxidation treatment on the top to form an oxidization film. By utilizing the method provided by the invention, the strength of the surface of the top is obviously improved, the use performance of the top is improved, the production cost of the top is reduced, the service life of the top is improved and the rolling quality of the seamless steel tube is guaranteed.
Description
Technical field
The present invention relates to the method that a kind of piercing mill of seamless steel tube top surface overlaying is strengthened.
Background technology
Piercing mandrel plug is a vitals of making seamless steel pipe, and it is mainly used in the steel pipe apical pore in the rolling seamless steel pipe production process, and the top mainly is made up of foundry goods, and its shape is similar to sub warhead.The top is subjected to high temperature, big roll-force, high fretting wear and the synergy of cold and hot fatigue repeatedly in process of production, causes reduce service life, and usage quantity is big, the consuming cost height.The top shows the top head various of failure such as nose, adhesion peel off, fatigue cracking of collapsing under the working condition of high temperature, high pressure, high friction, the top of inefficacy has had a strong impact on the roll seamless steel tube quality.In order to reduce the inefficacy of top, improve the service life of top, mainly improve from following several aspects at present: first kind is to improve the serviceability of top by the chemical composition that changes heading material, this method generally realizes by the proportioning of adjusting alloying element, this method has improved the cost of manufacture of top, and improves limited in one's ability; Second kind is the service life that size by adjusting the top or shape and structure improve the top, but its improvement ability is also limited; The third is a manufacture craft of improving the top, and the top of will cast is improved to forges the top, can increase the compactness of top, and improving its service life, but the cost of Forging Technology is higher than casting process, so has expensive deficiency.
Summary of the invention
Technical problem to be solved by this invention provides the method that a kind of piercing mill of seamless steel tube top surface overlaying is strengthened, utilize this method can significantly improve the intensity on surface, top, improved the serviceability of top, reduced the cost of manufacture of top, improve the service life of top, guaranteed the roll seamless steel tube quality.
For solving the problems of the technologies described above, piercing mill of seamless steel tube of the present invention comes directly towards the method that surface overlaying is strengthened, and described top is foundry goods or forging, and this method comprises the steps:
Step 6, will carry out the surface heat oxidation processes through the top that turning processing is handled, so that the surface, top produces the oxide-film of heat insulation and anti-attrition.
Turning processing is done to described overlay cladding in above-mentioned top after carrying out described step 3, turning surface employing plasma arc bead welding method windrow again welds the alloy material formation oxide-film that can generate oxide-film, and then execution in step four is to step 6.
Above-mentioned Ni sill is that Ni content is 60-80%, C content is 0.1-0.3%, Co content is 0.2-7%, Cr content is 0.8-17%, Mn content is 0.7-1.5%, Mo content is 15.7-30%, Si content is 0-1.3%, W content is 0-5%, Fe content is 3-7%, surplus is V, above-mentioned Co sill is that Co content is 60-70%, C content is 0.5-1.5%, Cr content is 22-30%, Mn content is 1-1.5%, Ni content is 2-4%, Si content is 1-3%, W content is 8-10%, or another kind of Co sill is that Co content is 55-70%, C content is 0.2-0.3%, Cr content is 25-30%, Mn content is 1-1.5%, Mo content is 4-6%, Ni content is 2-3%, Si content is 1%, and above-mentioned content is percentage by weight.
The above-mentioned alloy material that generates oxide-film is that C content is that 0.15-0.3%, Ni content are that 1.5-3%, Mn content are that 0.3-0.7%, Si content are that 0.3-0.6%, Cr content are 1.5-3%, Mo content 0.1-1.5%, W content 0.2-2.5%, Cu content 0.1-0.3%, Co content.1-0.7%, surplus is Fe, above-mentioned content is weight percentage.
Because the method that piercing mill of seamless steel tube top surface overlaying of the present invention is strengthened has adopted technique scheme, promptly at first the top blank is carried out machined just, the top head cuts built-up welding thickness and body part keeps allowance for finish; Doing conventional flaw detection handles and has the defective processing of doing over again; Adopt Ni base, Co base or cermet material that the top head is carried out built-up welding and form overlay cladding and adopt plasma arc bead welding method, guarantee that overlay cladding and top head matrix fully fuse; To come directly towards and be machined to do turning that final size requires and flaw detection is handled, have the defective processing of doing over again; The surface heat oxidation processes is carried out in the top form oxide-film.Utilize this method can significantly improve the intensity on surface, top, improved the serviceability of top, reduced the cost of manufacture of top, improved the service life of top, guaranteed the roll seamless steel tube quality.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the structural representation of piercing mill of seamless steel tube top,
Fig. 2 is the schematic diagram of piercing mill of seamless steel tube top overlay cladding.
The specific embodiment
As depicted in figs. 1 and 2, the method that piercing mill of seamless steel tube top surface overlaying of the present invention is strengthened, described top 1 is foundry goods or forging, this method comprises the steps:
Step 6, will carry out the surface heat oxidation processes through the top 1 that turning processing is handled, so that the surface, top produces the oxide-film of heat insulation and anti-attrition.
Turning processing is done to described overlay cladding 4 in above-mentioned top 1 after carrying out described step 3, turning surface employing plasma arc bead welding method windrow again welds the alloy material formation oxide-film 5 that can generate oxide-film, and then execution in step four is to step 6.
Above-mentioned Ni sill is that Ni content is 60-80%, C content is 0.1-0.3%, Co content is 0.2-7%, Cr content is 0.8-17%, Mn content is 0.7-1.5%, Mo content is 15.7-30%, Si content is 0-1.3%, W content is 0-5%, Fe content is 3-7%, surplus is V, above-mentioned Co sill is that Co content is 60-70%, C content is 0.5-1.5%, Cr content is 22-30%, Mn content is 1-1.5%, Ni content is 2-4%, Si content is 1-3%, W content is 8-10%, or another kind of Co sill is that Co content is 55-70%, C content is 0.2-0.3%, Cr content is 25-30%, Mn content is 1-1.5%, Mo content is 4-6%, Ni content is 2-3%, Si content is 1%, and above-mentioned content is percentage by weight.
The above-mentioned alloy material that generates oxide-film is that C content is that 0.15-0.3%, Ni content are that 1.5-3%, Mn content are that 0.3-0.7%, Si content are that 0.3-0.6%, Cr content are 1.5-3%, Mo content 0.1-1.5%, W content 0.2-2.5%, Cu content 0.1-0.3%, Co content.1-0.7%, surplus is Fe, above-mentioned content is weight percentage.
This method adopts plasma arc bead welding method to form oxide-film at top head built-up welding Ni base, Co base or cermet material overlay cladding and through heat treatment, improved effectively that the top head material is high temperature resistant, high pressure resistant, the performance of friction resistant, and the binding ability of overlay cladding and top matrix is good, nose, adhesion peel off, the defective of fatigue cracking to have avoided former top head to collapse, improve the service life of top, guaranteed the roll seamless steel tube quality.On the basis of overlay cladding, the windrow weldering can generate the alloy material of oxide-film again, has further improved the combination property of top simultaneously.
Claims (4)
1. a piercing mill of seamless steel tube comes directly towards the method that surface overlaying is strengthened, and described top is foundry goods or forging, it is characterized in that this method comprises the steps:
Step 1, according to top process data, the top blank is carried out machined just, the top head cuts built-up welding thickness 2-5mm, the top body part keeps allowance for finish 0.5-1mm;
Step 2, will do conventional flaw detection through first mach top blank and handle, and, as exist above-mentioned defective then to come directly towards blank to do to do over again processing with crackle or the material linear discontinuities of finding to imply;
Step 3, employing Ni base, Co base or cermet material carry out built-up welding to the top head through cutting and form overlay cladding, and plasma arc bead welding method is adopted in built-up welding, and guarantee that overlay cladding and top head matrix fully fuse;
Step 4, according to top process data, will do turning processing through the top of head built-up welding and handle, satisfy the final size requirement of top;
Step 5, will do conventional flaw detection through the top that turning processing is handled and handle, and finding overlay cladding crackle, pore or the defective that is mingled with, as exist above-mentioned defective then to come directly towards to do to do over again processing;
Step 6, will carry out the surface heat oxidation processes through the top that turning processing is handled, so that the surface, top produces the oxide-film of heat insulation and anti-attrition.
2. the method that piercing mill of seamless steel tube top surface overlaying according to claim 1 is strengthened, it is characterized in that: the top is after carrying out described step 3, described overlay cladding is done turning processing, turning surface employing plasma arc bead welding method windrow again welds the alloy material formation oxide-film that can generate oxide-film, and then execution in step four is to step 6.
3. the method that piercing mill of seamless steel tube top surface overlaying according to claim 1 is strengthened, it is characterized in that: described Ni sill is that Ni content is 60-80%, C content is 0.1-0.3%, Co content is 0.2-7%, Cr content is 0.8-17%, Mn content is 0.7-1.5%, Mo content is 15.7-30%, Si content is 0-1.3%, W content is 0-5%, Fe content is 3-7%, surplus is V, described Co sill is that Co content is 60-70%, C content is 0.5-1.5%, Cr content is 22-30%, Mn content is 1-1.5%, Ni content is 2-4%, Si content is 1-3%, W content is 8-10%, or the Co sill is that Co content is 55-70%, C content is 0.2-0.3%, Cr content is 25-30%, Mn content is 1-1.5%, Mo content is 4-6%, Ni content is 2-3%, Si content is 1%, and described content is percentage by weight.
4. the method that piercing mill of seamless steel tube top surface overlaying according to claim 2 is strengthened, it is characterized in that: the described alloy material that generates oxide-film is that C content is that 0.15-0.3%, Ni content are that 1.5-3%, Mn content are that 0.3-0.7%, Si content are that 0.3-0.6%, Cr content are 1.5-3%, Mo content 0.1-1.5%, W content 0.2-2.5%, Cu content 0.1-0.3%, Co content.1-0.7%, surplus is Fe, above-mentioned content is weight percentage.
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| CN2010102017437A CN102284777A (en) | 2010-06-17 | 2010-06-17 | Method for strengthening surface overlaying of perforator top of seamless steel tube |
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| CN2010102017437A CN102284777A (en) | 2010-06-17 | 2010-06-17 | Method for strengthening surface overlaying of perforator top of seamless steel tube |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769794A (en) * | 2014-01-07 | 2014-05-07 | 烟台开发区蓝鲸金属修复有限公司 | Strengthening method of surface of piercing plug of seamless steel tube rolling mill |
| CN104245170A (en) * | 2012-04-24 | 2014-12-24 | 新日铁住金株式会社 | Facility for producing piercing plug |
| CN104254407A (en) * | 2012-04-24 | 2014-12-31 | 新日铁住金株式会社 | Plug used in piercing machine |
| CN104284741A (en) * | 2012-04-24 | 2015-01-14 | 新日铁住金株式会社 | Method for manufacturing piercing plug |
| CN104588931A (en) * | 2014-12-04 | 2015-05-06 | 常州大学 | Surfacing method for seamless tube piercing plug |
| CN104619434A (en) * | 2012-09-11 | 2015-05-13 | 杰富意钢铁株式会社 | Plug for rolling seamless steel pipe, method for manufacturing said plug, and method for manufacturing seamless steel pipe in which said plug is used |
| CN104736262A (en) * | 2013-01-11 | 2015-06-24 | 新日铁住金株式会社 | Plug for hot pipe manufacturing |
| EP2875876A4 (en) * | 2012-07-20 | 2016-05-25 | Nippon Steel & Sumitomo Metal Corp | Piercing plug |
| US9764366B2 (en) | 2012-04-11 | 2017-09-19 | Nippon Steel & Sumitomo Metal Corporation | Method for regenerating a plug for use in a piercing machine |
| CN107433382A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | Cobalt-based resurfacing welding material and the top restorative procedure based on the material |
| CN107598351A (en) * | 2017-09-13 | 2018-01-19 | 浙江富春江水电设备有限公司 | The cylindrical large area plasma overlaying method of Stellite cobalt-base alloys |
| CN108994419A (en) * | 2018-08-20 | 2018-12-14 | 江苏科技大学 | A kind of pecker composite overlaying manufacturing method |
| CN110205561A (en) * | 2019-06-20 | 2019-09-06 | 芜湖点金机电科技有限公司 | A kind of reinforcing piercing plug for seamless steel tubes and preparation method thereof |
| CN112474808A (en) * | 2020-11-10 | 2021-03-12 | 九江职业大学应用技术研究所 | Seamless steel pipe piercing plug and preparation method thereof |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9764366B2 (en) | 2012-04-11 | 2017-09-19 | Nippon Steel & Sumitomo Metal Corporation | Method for regenerating a plug for use in a piercing machine |
| US9333544B2 (en) | 2012-04-24 | 2016-05-10 | Nippon Steel & Sumitomo Metal Corporation | Plug used in piercing machine |
| CN104245170A (en) * | 2012-04-24 | 2014-12-24 | 新日铁住金株式会社 | Facility for producing piercing plug |
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| EP2875876A4 (en) * | 2012-07-20 | 2016-05-25 | Nippon Steel & Sumitomo Metal Corp | Piercing plug |
| CN104619434A (en) * | 2012-09-11 | 2015-05-13 | 杰富意钢铁株式会社 | Plug for rolling seamless steel pipe, method for manufacturing said plug, and method for manufacturing seamless steel pipe in which said plug is used |
| US10441982B2 (en) | 2012-09-11 | 2019-10-15 | Jfe Steel Corporation | Plug for rolling of seamless steel pipe, method for manufacturing the same and method for manufacturing seamless steel pipe using the same |
| US9352370B2 (en) * | 2013-01-11 | 2016-05-31 | Nippon Steel & Sumitomo Metal Corporation | Plug for hot tube-making |
| US20150258591A1 (en) * | 2013-01-11 | 2015-09-17 | Nippon Steel & Sumitomo Metal Corporation | Plug for hot tube-making |
| CN104736262A (en) * | 2013-01-11 | 2015-06-24 | 新日铁住金株式会社 | Plug for hot pipe manufacturing |
| CN103769794A (en) * | 2014-01-07 | 2014-05-07 | 烟台开发区蓝鲸金属修复有限公司 | Strengthening method of surface of piercing plug of seamless steel tube rolling mill |
| CN104588931A (en) * | 2014-12-04 | 2015-05-06 | 常州大学 | Surfacing method for seamless tube piercing plug |
| CN107433382A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | Cobalt-based resurfacing welding material and the top restorative procedure based on the material |
| CN107598351A (en) * | 2017-09-13 | 2018-01-19 | 浙江富春江水电设备有限公司 | The cylindrical large area plasma overlaying method of Stellite cobalt-base alloys |
| CN107598351B (en) * | 2017-09-13 | 2023-10-03 | 中国原子能科学研究院 | Large-area plasma surfacing method for outer circle of Stellite cobalt-based alloy |
| CN108994419A (en) * | 2018-08-20 | 2018-12-14 | 江苏科技大学 | A kind of pecker composite overlaying manufacturing method |
| CN110205561A (en) * | 2019-06-20 | 2019-09-06 | 芜湖点金机电科技有限公司 | A kind of reinforcing piercing plug for seamless steel tubes and preparation method thereof |
| CN112474808A (en) * | 2020-11-10 | 2021-03-12 | 九江职业大学应用技术研究所 | Seamless steel pipe piercing plug and preparation method thereof |
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Application publication date: 20111221 |